DMPR-IN-38A
18-HE60D104-1
Library Service Literature
Product Section Unitary
Product Unitary Accessories
Model Econ., Dmprs. Motors, etc.
Literature Type Installer's Guide
Sequence 38A
Date October 2001
File No. SV-UN-ACC-DMPR-IN-38A 10/01
Supersedes -DMPR-IN-38
0-50% Motorized
Outside Air Damper
BAYDMPR051A T*C036-060A*R
Y*C036-060A*R
WSC036-060A*R
BAYDMPR052A T*C036-060A*E
Y*C036-060A*E
BAYDMPR054A T*C072-120A*R
Y*C072-120A*R
WSC072-120A*R
BAYDMPR055A T*C072-120A*E
Y*C072-120A*E
Installer's
Guide
Customer Property: Contains
wiring and service informa-
tion. Please retain.
Models : Used With:
2
Installation - Field Installed
Note: This instruction covers installation of
BAYDMPR051A, BAYDMPR052A
(T/W/Y036-060 units) and
BAYDMPR054A,BAYDMPR055A
(T/W/Y072-120 units)
Parts List
1 - Motorized OA Damper Assembly
10 - Screws (T/W/Y036-060 units)
12 - Screws (T/W/Y072-120 units)
1 - Sealant; Silicone Rubber
1 - Blockoff; Bottom
Uncrate the damper and locate all parts shown in
Figure 1.
OPEN AND LOCK UNIT
DISCONNECT TO PREVENT INJURY OR DEATH
FROM ELECTRICAL SHOCK OR CONTACT WITH
MOVING PARTS.
Each damper ships with items 1, 2 and 3 attached. Remove
screws completely from items 1 and 2. Remove item 3 by
loosening the 3 screws but do not remove them. Refer to
Figure 1.
Figure 1
1. Remove unit end panel, retain the screws removed from
the top of panel and the screws removed from bottom of
panel for use later.
2. To install the damper, lift into position by fitting the upper
left hand corner around the channel in the cabinet post.
Then pivot the economizer into the opening in the cabi-
net. Refer to Figure 3.
3. Once the damper is in place, lift the damper and panel
assembly to align the upper two screw holes. Secure the
top by inserting 2 screws, top left 1 then top right 2. Re-
fer to Figure 3.
4. Pull out on the bottom of the damper and secure bottom
left 3. Refer to Figure 3.
Figure 2
Downflow Installation
5. Remove the filter access panel. Position the adapter
backing plate inside the filter section. The adapter back-
ing plate will slip over the 3 screws that were loosened in
Figure 1. Align the screw engagement hole in the
adapter backing plate, with the screw clearance hole in
panel and secure lower right side of damper with screw
4. Refer to Figure 3.
6. Install the bottom blockoff and secure with 3 screws. Re-
fer to Figure 3.
7. Refer to Figure 6 for sealing instructions.
Wiring Connections
Reliatel Units
Locate unit wiring harness plug P7 and plug into J7 on the
acturator motor.
Electromechanical Units
Locate unit wiring harness plug PPM2A and plug into the
acturator motor wiring harness.
3
Figure 3
Instructions - Factory Installed Damper Set-Up
Downflow Configuration
To position damper for Downflow operation, complete the
following steps:
OPEN AND LOCK UNIT
DISCONNECT TO PREVENT INJURY OR DEATH
FROM ELECTRICAL SHOCK OR CONTACT WITH
MOVING PARTS.
1. Remove filter access panel.
2. Remove bottom blockoff from its shipping location. See
Figure 4.
Figure 4
3. Remove the bottom three screws from the damper panel.
4. Pull the damper assembly out into operating position as
shown if Figure 5.
5. Secure the damper assembly with 2 screws at the bottom
of the corner posts.
6. Install bottom blockoff and secure with 3 screws.
7. Refer to Figure 6 for sealing instructions.
Figure 5
Minimum Position Setting
To adjust the minimum position setting and check out the
damper, the power must be connected.
Close the unit disconnect and place the zone sensor fan se-
lector in the fan "ON" position and the heat/cool selector in
the "OFF" position. This will place the damper in the mini-
mum ventilation position.
To adjust the minimum position setting for the required ven-
tilation air, turn the potentiometer (on the damper motor)
clockwise to "open" (to increase the amount of ventilation)
or counterclockwise to "close" (to decrease the amount of
ventilation). The damper will open to this setting each time
the blower circuit is energized.
When adjusting minimum position, the damper may move to
the new setting in several small steps. Once the damper
has remained in position for 10 - 15 seconds without move-
ment, it can be assumed it is at the new position.
Replace the filter access panel.
The damper will close when the blower circuit is de-ener-
gized.
4
Dry Bulb Setting
Standard economizer dry bulb change
over temperature is field selectable to
4 outdoor temperatures. See the fol-
lowing table for potentiometer set-
tings.
Potentiometer Dry Enthalpy
Setting Bulb
A 73* 27
B7025
C6723
D6322
* Factory Setting
Figure 6
© American Standard Inc. 2001 Technical Literature Printed in USA
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